Qingdao Yuanding Group Co.,ltd built in 1966, which is specialized in high alloy castings, our products involved in the glass, metallurgical , petrochemical and environmental protection engineering industry. For Glass, we can offer all kinds of Lor roller and rollers used in the float glass annealing lehr process, such as steel plain roller, graphic ring roller, steel ring,slotted roller,fiber roller ,compound ring roller and pattern roller used in the pattern glass line. Most famous glass gaint in the world is our long term customers. For metallurgical and industrial furnace, we can supply various of hearth roller,radiant tubes, alloy blocks and other kinds of heat-ressiting casting parts wh ich are widely used in the heat-treatment furnace, CAL, CPL and CGL in the steel mill. For petrochemical filed, QYD supplies various of heat-resisting castings, such as ethylene cracking tubes and hydrogen-making reformer tubes, catalyst tubes and other alloy casting parts etc.